Update bare exceptions to specify Exception.

This will keep us from accidentally catching program-exiting exceptions
like KeyboardInterupt and SystemExit.

lib/ansible/modules/network/a10/a10_service_group.py

@@ -137,7 +137,7 @@ def validate_servers(module, servers):
         if 'port' in item:
             try:
                 item['port'] = int(item['port'])
-            except:
+            except Exception:
                 module.fail_json(msg="server port definitions must be integers")
         else:
             module.fail_json(msg="server definitions must define the port field")